ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees.

ISO 14064 consists of the following parts, under the general title Greenhouse gases:

 Part 1: Specification with guidance at the organization level for quantification and reporting of greenhouse gas emissions and removals.

 Part 2: Specification with guidance at the project level for quantification, monitoring and reporting of greenhouse gas emission reductions or removal enhancements.

Part 3: Specification with guidance for the validation and verification of greenhouse gas assertions.

http://www.iso.org/iso/catalogue_detail?csnumber=38381